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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $891,153,329 | 237,644,546 | 237,644,546 |
| 2006 | $1,842,423,518 | 267,504,798 | 267,504,798 |
| 2007 | $1,636,113,546 | 227,191,830 | 227,191,830 |
| 2008 | $1,566,554,566 | 208,237,698 | 208,237,698 |
| 2009 | $1,135,554,310 | 212,932,264 | 212,932,264 |
| 2010 | $1,539,397,484 | 189,801,021 | 189,801,021 |
| 2011 | $2,115,011,605 | 207,046,527 | 207,046,527 |
Note: Quantity represents Weight in kilograms
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